Re: [Qemu-block] [PATCH v2 for-4.1 2/2] iotests: Test backup job with two guest writes

[Vladimir Sementsov-Ogievskiy]

01.08.2019 20:39, Max Reitz wrote:
> Perform two guest writes to not yet backed up areas of an image, where
> the former touches an inner area of the latter.
> 
> Before HEAD^, copy offloading broke this in two ways:
> (1) The target image differs from the reference image (what the source
>      was when the backup started).
> (2) But you will not see that in the failing output, because the job
>      offset is reported as being greater than the job length.  This is
>      because one cluster is copied twice, and thus accounted for twice,
>      but of course the job length does not increase.
> 
> Signed-off-by: Max Reitz <address@hidden>


Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
Tested-by: Vladimir Sementsov-Ogievskiy <address@hidden>



-- 
Best regards,
Vladimir